TwigGenerator is a PHP code generator based on the Twig template engine. It leverages the power of Twig templates to simplify the generation of PHP code, to make it more extensible, and more readable.
Checkout this GitHub repository and the two submodules (Twig and Symfony ClassLoader):
git clone https://github.com/cedriclombardot/TwigGenerator.git
cd TwigGenerator
wget -nc http://getcomposer.org/composer.phar
php composer.phar install
To generate PHP classes, you need to create a "Builder", and one or more Twig templates. Then, add the new Builder to a "Generator", and generate the result.
First, create a class extending TwigGenerator\Builder\BaseBuilder
- no need for methods at start.
<?php
namespace MyProject\Builder;
use TwigGenerator\Builder\BaseBuilder;
class MyBuilder extends BaseBuilder
{
}
Tip: Alternatively, a builder can implement the TwigGenerator\Builder\BuilderInterface
if it has to extend a custom class.
Next, create a couple twig templates under the templates/
directory. Usually, you need at least one template for the main structure, plus one template per feature added to the class.
Here is an example main template (or layout) for creating a custom PHP class (to be stored in templates/_base/common.php.twig
):
<?php
{{ namespace is defined ? "namespace " ~ namespace ~ ";" : "" }}
class {{ className }} {{ extends is defined ? "extends " ~ extends : "" }}
{
{% block functions %}
{% endblock %}
}
And now, an example for adding a custom method (to be stored in templates/MyBuilder.php.twig
):
{% extends "_base/common.php.twig" %}
{% block functions %}
public function tellMeHello()
{
echo "Hello world";
}
{% endblock %}
Use a TwigGenerator\Builder\Generator
instance to generate the result. For instance:
<?php
// initialize the autoload
require_once '/path/to/TwigGenerator/src/autoload.php';
// alternatively, use your favorite PSR-0 autoloader configured with TwigGenerator, Symfony and Twig
// initialize a builder
$builder = new MyProject\Builder\MyBuilder();
$builder->setOutputName('MyBuilder.php');
// add specific configuration for my builder
$builder->setVariable('className', 'MyBuilder');
// create a generator
$generator = new TwigGenerator\Builder\Generator();
$generator->setTemplateDirs(array(
__DIR__.'/templates',
));
// allways regenerate classes even if they exist -> no cache
$generator->setMustOverwriteIfExists(true);
// set common variables
$generator->setVariables(array(
'namespace' => 'MyProject\Generated',
));
// add the builder to the generator
$generator->addBuilder($builder);
// You can add other builders here
// Run generation for all builders
$generator->writeOnDisk(__DIR__.'/Generated');
The file will be generated in MyProject\Generated\MyBuilder.php
, as follows:
<?php
namespace MyProject\Generated;
class MyBuilder
{
public function tellMeHello()
{
echo "Hello world";
}
}
You can see some basic code generation samples in the tests, and on some GitHub repositories like fzaninotto/Doctrine2ActiveRecord, or cedriclombardot/AdmingeneratorGeneratorBundle.
Then, just run:
phpunit